Question

Simplify : (2/5)^3 x (2/5)^5 ÷ (2/5)^7

Answer 1

Answer:

(2/5)^3 × (2/5)^ 5 ÷ (2/5)^7

= first is that 2/5 is common. so, take 2/5 common.

and we know that ( × = + )

( ÷ = - )

so, let's do it..

take 2/5 common = ( 2/5 )

and then solve the powers =

( 2/5 )^ ( 3 + 5 - 7 )

= ( 2/5 )^ { 3 + ( - 2) }

= ( 2/5 )^ ( 3 - 2 )

= ( 2/5 )^1

and we know that the number which have power 1 means the power change to 0.

( 2/5 )^ 0

= means, the answer is 0. { (2/5)^ 0 = 0 ) }

so this is your answer..